NORA-W2 series - Hardware integration manual
UBX-22005177 - R01
Module integration
Page 8 of 61
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Module integration
NORA-W2 must be integrated together with a host CPU system, as shown in
Figure 3: NORA-W2 integration in host system
NORA
-
W2 series modules come with the pre-flashed application software, supporting IEEE 802.11
b/g/n single-band 2.4 GHz operation. The host system can set up and control the module through the
UART interface.
☞
UART is the only data interface available for establishing connection with AWS and host CPU.
Control signals for reset, interrupt, and module wake up are used to control NORA-W2 from host CPU.
The power supply is sourced from the
VCC
and
VIO
pins.
If external antennas are needed, NORA-W251 supports U.FL connector pads for RF connection.
NORA-W251, with U.FL connectors is especially useful if the application product is hosted in a metal
enclosure and external antennas must be used.
NORA-W256 has an integrated antenna and is suitable for products mounted in a plastic housing.
For correct operation, it is important to implement the appropriate configuration settings and correct
start-up sequence, as described in the NORA-W2 data sheet
. This puts requirements on the
enabling of power sources and on the timing and assertion of
PDn
.
☞
For pin-out and pin assignment information, see the NORA-W2 series data sheet
2.1
Power supply
The power for NORA-W2 series modules is supplied through
VCC
and
VCC_IO
pins by DC voltage.
